Li/SO₂ cells and Li/SOCl₂ cells-safe use andtesting

摘要

The author discusses two specific cell designs, the spiral woundLi/SO₂ cell and the spiral wound Li/SOCl₂ cell.All cells are designed to vent at pressures well below those required tocreate explosive fragmentation of the cell's case. The primary concernis that people are not injured when a cell vents or ruptures. Thelikelihood of cell venting has been reduced to very low levels byoptimizing cell designs. If fully developed Li/SO₂ cells ofLi/SOCl₂ cells are discharged within the intended designlimits, they are essentially nonhazardous. In addition, the consequencesof cell ventings are being minimized by use of appropriate absorbentmaterials and protective coatings. During battery assembly and test,detection and monitoring equipment are used to sense the presence ofvented gases. Tester data analysis techniques have been developed toforesee either an increasing likelihood of a vent or the presence of avented cell. Standard cleanup procedures have been developed to safelydecontaminate the assembly or test area following a cell vent